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A 2200 kg car moving east at 10.0 m/s collides with a 3000 kg car moving north. The cars stick together and move as a unit after the collision, at an angle of 39.0° north of east and at a speed of 5.44 m/s. Find the speed of the 3000 kg car before the collision.
Light passes through a 200 line/mm diffraction grating and is observed on a 1.0 m-wide screen located 1.0 m behind the grating. What are the minimum and maximum possible values of wavelength
A 2.16 kg solid sphere (radius = 0.120 m) is released from rest at the top of a ramp and allowed to roll without slipping. what is its total kinetic energy
A 5* 10^2 kg hot air balloon takes off from rest at the surface of the earth. The non conservative wind and lift forces take the balloon up, doing +9.70*10^4J of work on the balloon in the process. At what height above the surface of earth does th..
Two pulse of light (red and blue) enter a huge block of glass at the same time. What is the index of refraction for the blue light in the glass
A crate is pulled to the right with a force of 93.7 N, to the left with a force of 127.9 N, upward with a force of 563.6 N, and downward with a force of 238.1 N. What is the net external force in the x direction? What is the net external force in ..
A certain atom has atomic number Z = 20 and atomic mass number A = 42. What is the approximate radius of the nucleus of this atom
Using a vernier caliper of least count 0.01 cm, the length of a cylinder is measured to be 3.76 cm, and its diameter 1.28 cm. 1-Find the volume of the cylinder. 2-Calculate the probable percent error in the length. 3-Calculate the probable percent..
A 12kg hammer strikes a nail at a velocity of 8.2m/s and comes to rest in a time interval of 8.0. What is the average force acting on the nail
you walk 30m south and 30m east. find the magnitude and direction of the resultant displacement both graphically and
A small 15{rm g} bug stands at one end of a thin uniform bar that is initially at rest on a smooth horizontal table. The other end of the bar pivots about a nail driven into the table and can rotate freely, without friction.
A ship travels 80 km due north on the first day of a voyage, 50 km northeast on the second day, Find the resultant displacement by the polygon method
A police car is traveling east at 39.5 m/s along a straight road, overtaking a car ahead of it moving east at 32.0 m/s. What is the wavelength in front of the police car
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